Tensor

2. (Science: geometry) The ratio of one vector to another in length, no regard being had to the direction of the two vectors; so called because considered as a stretching factor in changing one vector into another. See versor.

Origin: NL. See Tension.

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... to. What does it mean to have photons "entangled?" >> >> > That the joint wave function of a a pair of photons is not the tensor > product of two single-particle wave functions. That is correct and very succinct. But, perhaps a hands on demonstration would be helpful. ...